Sheet registering device



May 26, 1931. c, ROQT 4 1,807,436

SHEET REGISTERING DEVICE Filed March 17. 1928 INVENTOR.

A TTORNEYS.

Patented May 26 1931 I UNITED STATES,

PATENT OFFICE CHARLES F. ROOT, OF-CLEVELAND, OHIO, ASSIGNQR TO THECHANDLER & PRICE COM- 7 SHEET REGISTERING DEVICE Application filed March17, 1928, 's erialNo. 262,503.

The presentimprovem'ent relates more particularly to devicesfor'registering'a sheet of paper on the platen in printing presses ofthe socalled platen or Gordon type. 'It will be understood, however,that the invention is not necessarily limited to use in any suchparticular type of press. Ordinarily two end stops and one side stop areprovided on such platen and, preliminarily to printing, the sheetrequires to be placed with its cor responding edges in contact withthese stops in order that it mayproperly register with the form. Theobject of the present invention is to provide a device that is not onlyadapted thus automatically to shift the sheet as may be necessary, butwhich is simple and compact in itsconstruction. A further object is tomount the device so that it will not interfere with the raising of thetympan bail, in order to make ready the platen for printing. To theaccomplishment of the foregoing and related ends, the invention, then,consists of the means hereinafter fully described and particularlypointed out in the elevation thereof; Fig. 3 is an end elevation of thesame; Fig. 4 is a part vertical section and part end elevation of oneportion of the device, the plane of such section being as indicated onthe line ll, Fig. 2; andFig. 5 is a partial front elevation, like thatof Fig. 2, but showing a modification in the construction of the device.r

In the several figures of the drawings, the

device is shown as appliedto the platen 1 of a typical Gordon press. 7It has been deemed unnecessary to illustrate the manner in which suchplaten is supported for the oscillatory movement which requires to beimparted thereto in order to bring a sheet thereon into contact with theform (notshown). It hassimilarly been deemed necessary to illustrate themeans whereby the gripper bar 2, that is pivotally attached atitsrespective ends to the lower edge of the platen, is'actuated, but itwill be understood that incidentally to oscillation of the platen, saidbar is likewise oscillated so as to swing the gripper fingers 3'carriedthereby downwardly against the face of the platen, their function beingto retain the sheet in place dur-" ing the printing operation. Toaccommodate saidfingers to sheets of various size, they are preferablyadjustably mounted on the'bar, being secured in desired location bymeans of clamp nuts 4. The usual two end stops 5 and side stop 6 arediagrammatically shown in 'Fig. 1, it being understood that these stopswill be variously located, depending upon the size of the sheet andother conditions'. V

Referring more particularly to the form of the device shown in Figs; 1to 4:, inclusive, the device of present interest will be seen tocomprise as it'sfprincipal element an arm 10 that is provided at itsouter or free end with resilient sheet-receiving and gripping fingers offamiliar construction. .As illustrated, there are three such fingersresembling the tines of a fork, the central finger 11 being arranged toextend in close fitting contact with the surface of the platenor ratherof the tympan secured thereon,so that a sheet delivered onto the lattermay ride over said fingerand rest on the upper surface thereof. The twoother fingers 12 are curved down- Wardly and then upwardly so as to beadapted to contact with-th'eupper surface of such sheet with suflicientpressure to' cause the sheet to follow the movement of arm 10 until itsedges are brought into abutment with stops 5 and 6, as hereinafterdescribed, whereupon the fingers will slide freely off of the sheet. l

Arm 10 at its opposite or lower end is lon gitudinally slotted so as'toadapt it to be adustably secured, by means of a screw 13, in a seat 14formed in the upper face of a supporting member 35. The latter includesa cylindrical stud 36 rotatably mounted ina suitable bearing thereforprovided in a bracket 37 that, as best shown in Fig. 2, comprises twoparts adapted to be drawn together by means of a screw 38, such twoparts being formed with rabbeted grooves that fit a rail 39 ofcomplementary cross-section attached to the lower edge of the platen. Asa matter of fact, such rail will be a part of the usual tyinpanretaining bail with which the platen is ordinarily provided.

Surrounding the lower end of stud 36, which projects through thecorresponding bracket part, is a coil spring 40 that is .at-.

a corresponding swinging movement to .arin

Instead of having the pin 42 so arranged as to contact with the adjacentinner edge of the bar 2, it may, as shown in the modified constructionof Fig. 5, be arranged to contact with the outer face of said bar. Insuch case, however, the spring 42 that surrounds stud 36 will be coiledin the opposite direction from that shown in Fig. 2, so as to tend torotate the base 35 and arm 10 in a clockwise direction.

The foregoing registering device, it will be obvious, may be readilyadjusted longitudinally of bar 2 by simply loosening-the nut thatsecures the bracket. All parts of the-device, it will be observed, arecarried by said bracket, thus rendering the device entirelyselfcontained. At the same time the parts may be readily disassembled orassembled as oocasionmay require. Furthermore, the device, being carriedwholly by the tympan bail, will not interfere with the raising of thelatter in order to make ready.

Other modes of applying the principle of my invention may be employedinstead of the one explained, change being made as regards the mechanismherein disclosed, provided the means stated by any otthe followingclaims or the equivalent of such stated means be employed. 7

I therefore particularly point out and distinctly claim as myinvention 1. The combination with a platen having an end stop and a sidestop thereon,.of a' gripper bar oscillatorily mounted on the lower edgeof said platen, a sheet receiving and carrying device, a support towhich said device is pivotally attached, means for regulably securingsaid support along the lower edge of the platen,and 11183.11S'f01oscillating carrying device, a support-bracket to which said device is'pivotally attached, clamping :means securing said support bracket alongthe lower edge of the platen, spring means for oscillating the sheetreceiving and carrying device in one direction, and means unconnected tosaid gripper bar but actuated thereby for oscillating the sheetreceiving and carrying device in theiother direction.

3. The combination with a platen having anend stop and aside'stopthereon, of a gripper bar oscillatorily mounted on the loweredge of said p'laten,a'support-bracket'regulaole along such platen-edge,a sheet receiving and carrying device pivotally connected to saidbracket, means for clamping said support-bracket in regulated position,a member pivoted to said support bracket about an angle at approximatelyrightangles to the axis of said bar, a pin projecting downwardly fromsaid member and adapted to have sliding contact with said bar, andresilient means connected with said member for normally maintaining saidpin in contact with said bar.

l. The combination witha platen having anend stop and a side stopthereon, of a grip per bar oscillatorily mounted onthe lower edge ofsaid platen, a support-bracket regulable along such platen-edge, meansfor clamping said support-bracket in selected'position, a member havinga stud pivotally mounted in said bracket and projecting therethrough,the axis of said stud being at approximately right angles to that ofsaid bar, a pin projecting downwardly from said member in parallelrelation to said stud and adapted to have sliding contact withsaid bar,a coil spring surrounding the projecting portion of said stud connectedat one end therewith and at its other end with said bracket, wherebysaid pin is normally maintained thus in contact with said bar, and asheetre ceiving and carrying device attached to said member.

5. The combination with a platen having an end stop and a side stopthereon, of a gripper bar .oscillatorily mounted on the lower edge ofsaid platen, abracket adapted to be secured to such planten-edge inselected position .therealong, a supporting member having astudpivotally mounted in said bracket and projecting theretlirougl1,'theaxis of said stud being at approximately right angles to that of saidbar, a pin projecting downwardly from said member in parallel relationto said stud and adapted to have sliding contact with the inner face ofsaid bar, a coil spring surrounding the projecting portion of said studconnected at one end therewith and at its other end with said bracket,whereby said member is rotated in a counter-clockwise direction and saidpin thus normally maintained in contact with said bar, and a sheetreceiving and carrying de- Vice attached to said member.

Signed by me, this 14th day of March,

CHARLES F. ROOT.

